What is the difference between low alkali cement and ordinary cement

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Brazil, the world's largest coffee bean producer, recently announced that it is facing the worst drought in 91 years, affecting local hydropower generation and agricultural production, causing the prices of related crops to soar, and coffee bean futures soaring to a nearly four-and-a-half-year high. News of the drought in Brazil quickly pushed up coffee futures. Prices of Arabica beans, favored by boutique cafes and premium brands, continued to rise, hitting their highest level in nearly seven years. Brazil is the world's largest coffee producer and its coffee production is critical to global supply. Analysts expect Brazil’s next year’s coffee bean harvest to fall by 5% to 10%, or even more, over the next two years, and the price increase brought about by the cut is a foregone conclusion.
Like coffee beans, the price of low alkali cement keeps going up.

There are many types of cement, such as low alkali cement, ordinary cement and so on. Do you know the difference between low alkali cement and ordinary cement? What are the precautions for the use of cement?

The difference between low alkali cement and ordinary cement

1. The properties are different. The raw materials of low-alkali cement contain a large amount of blast furnace slag, while the raw materials of ordinary cement are mainly limestone and clay.

2. The characteristics and functions are different. Low-alkali cement is suitable for use in particular areas because the alkalinity is relatively low, while ordinary cement has a broader range of use and higher alkalinity.

Precautions for the use of cement

1. Do not expose to the sun for quick drying

After the construction is completed, attention must be paid to the maintenance of the glue to avoid the evaporation of water too fast, resulting in too fast drying and reducing the strength. The general maintenance time is about seven days.

2. Avoid freezing at a negative temperature

After the concrete is mixed, it cannot be frozen because the temperature is too low. So be sure to choose a suitable temperature environment for construction.

3. Avoid high temperature and heat

If the construction temperature is too high, the calcium hydride in the concrete is easily decomposed, which will lead to the problem of reducing the strength of the concrete. If it needs to be constructed in a high-temperature environment for some special reasons, it is best to add some heat-resistant materials to the concrete, which can increase the strength of the concrete.

4, avoid the base layer from being dirty and soft

Be sure to treat the base layer firmly before construction so that the cement and the foundation will be firmly bonded together during construction. If the construction is on a smooth base surface, the base surface must be brushed so that the cement and the base surface can bond more firmly. In addition, when mixing concrete, be sure to mix evenly so that the concrete setting effect will be better during construction.

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Since February, gold has enjoyed a smooth upward run on the back of surging US inflation and the brewing of war. While expectations of rate rises have also risen in tandem over this period, gold had been largely pre-priced and the underlying driver of tightening expectations had come from inflation continuing to rise to record highs. The risk aversion caused by the continued tension in the war also provided an important short-term support for gold. This will have a certain impact on the price of the low alkali cement and the market of the low alkali cement. 

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